May 28, 2024 — PLDB now has foundationScore, which measures how often a language is used in the main implementations of other languages.
To calculate foundationScore, we download the git repos for all open source languages in PLDB (which is >98% of them), run cloc on each, and sum the output.
The results are below. Click the image for the interactive version. You can also see all the foundationScore data in the PLDB Explorer.